Answer:
0.23076923076
You can search for any mathematical expression,
HELP ME PLEASEEEEE
Solve the following system of equations using Substitution, showing all work.
y= 2x + 3
2x + 5y = 3
Answer: (x,y) = (-1, 1)
This means that x = -1 and y = 1
========================================================
Explanation:
The first equation says that y is the same as 2x+3
That allows us to substitute y for 2x+3 in the second equation like so:
2x+5y = 3
2x+5( y ) = 3
2x + 5(2x+3) = 3 .... y replaced with 2x+3
2x+10x+15 = 3
12x+15 = 3
12x = 3-15
12x = -12
x = -12/12
x = -1
Then we'll substitute this into the first equation to find y
y = 2x+3
y = 2(-1) + 3 .... x replaced with -1
y = -2+3
y = 1
Together x = -1 and y = 1 pair up to form the ordered pair solution (x,y) = (-1,1)
If you were to graph y = 2x+3 and 2x+5y=3 on the same xy grid, then you should see that the two lines intersect at the location (-1,1). This is a visual way to determine the solution quickly through use of a graphing calculator.
What is the solution?
A. (6, 1)
B. (2, -1)
C. (0, -2)
D. (-2, 7)
Answer:
solution of what ? you mean the crossing point of both lines ?
that is (6,1) as the graph shows
Step-by-step explanation:
you can see x=6 and y=1.
that is then the point (6,1).
we could also define the equations of both lines and then calculate the value of x, where both equations deliver the same (y) value.
but for that we would need to get the (x,y) coordinates of the 4 marked points in the same way we got them for the crossing point already. waste of time and effort.
PLEASE HELP, THANKS SO MUCH!! EXPLAIN UR ANSWER = BRAINLIEST
Answer:
2571.14 m^3
Step-by-step explanation:
The volume of a sphere is given by
V = 4/3 pi r^3
The diameter is 17 so the radius is 1/2 of the diameter or 17/2 =8.5
V = 4/3 (3.14) (8.5)^3
= 2571.13666
Rounding to the nearest hundredth
= 2571.14 m^3
=================================================
Work Shown:
V = (4/3)*pi*r^3
V = (4/3)*3.14*(8.5)^3
V = 2571.13666666667 which is approximate
V = 2571.14
-------------
Notes:
The units for the volume are in cubic meters, or m^3. Think of a 1 m by 1 m by 1 m block, the volume of which is 1*1*1 = 1 m^3.The diameter is 17 meters, half of which is 17/2 = 8.5 meters. So the radius is r = 8.5In the second to last line, the '6's go on forever. It's only due to rounding is why that '7' shows up.The answer above is approximate because pi = 3.14 is approximate. Use more decimal digits in pi to get a more accurate volume. However, your teacher wants you to use pi = 3.14Brainlest if correct!!!
During one month, the mean high temperature in Boise, Idaho, was 52.1°F with a standard deviation of 6.5° F. During the same month, the mean high temperature in Death Valley, California, was 81.9° F with a standard deviation of 6.4° F. Select all the statements that are true.
Answer:
B. The average high temperature in Death Valley was greater than the average in Boise
C. The variation of high temperature in Death valley was about the same as the variation in Boise
Step-by-step explanation:
Step 1: In a normal distribution, about 95% of the values are ±2 standard deviations from the mean. ±2 standard deviation from the mean high temperature of Boise is 39.1 to 65.1. Therefore, option A is wrong
Step 2: The average temperature high temperature of each of the places isngiven by their mean high temperatures.
The mean high temperature in Boise, Idaho, was 52.1°F while the mean high temperature in Death Valley, California, was 81.9°F.
Difference between the mean high temperatures is (81.9 - 52.1) = 29.8°F
Therefore, the average high temperature in Death Valley was greater than the average in Boise. Option B is correct.
Step 3: Standard deviation measures how spread out data is. It is a measure of variation of data.
The standard deviation of the high temperature in Boise, Idaho was 6.5° F, while the standard deviation of the high temperature in Death Valley, California was 6.4° F. This two values are about the same. Therefore, option C is correct.
Step 4: In a normal distribution, about 68% of the values are ±1 standard deviations from the mean. ±1 standard deviation from the mean high temperature of Death Valley is 75.5 to 88.3. Therefore, option D is wrong
Step 5: In a normal distribution, about 99.7% of the values are ±3 standard deviations from the mean. ±3 standard deviation from the mean high temperature of Boise is 32.6 to 71.6. Therefore, option E is wrong
Rewrite as a simplified fraction.
\large{3.\overline{5} = {?}}3.
5
=?3, point, start overline, 5, end overline, equals, question mark
DO NOT GIVE ME A LINK.
Answer: Hi I think that I can help you with your problem!
Let which means
Here a bar over 8 means that there the given decimal value is non terminating and there are a large numbers of 8 present after the decimal.
To solve the given non terminating decimal as fractions, we will have to eliminate the bar term from the given value.
So, we can rewrite as:
......(1)
Now, let us multiply the above with 10.
....... (2)
Now, let us subtract (1) from (2):
So, in simplified fractions:
Step-by-step explanation:
What’s 2-4 plz helppppp
Answer:
2.A 3.D 4.A
Step-by-step explanation:
You may want to check number four because I'm not sure. Radius is any length from the center of the circle to the edge of the circle. A sector is a piece of a circle, like a cut slice of pie or a slice of pizza.
Answer:
2. A
3. B
4. A
Step-by-step explanation:
PLEASEEEEEEEEEEEEEEEEEEEEEEE
Answer:
9
hope this helps
have a good day :)
Step-by-step explanation:
answer this question
Given circle Q with a measure of SR=120° and a radius of 9 feet, as shown below.
Determine the arc length of SR. Use mathematics to explain how you determined your answer❤️
Answer:
The arc length of the entire circle would be 2*PI*9
We need to know the arc length of 1/3 of the circle so we calculate
arc length = (2 * PI * 9) / 3
arc length = 2 * PI * 3
arc length = 6 * PI
arc length = 18.8495559215
Step-by-step explanation:
Here's the revenue and expenses for the month. Calculate whether Mia had a profit or loss.
JANUARY ACCOUNTS
KING
3.00
REVENUE
FIXED EXPENSES
VARIABLE EXPENSES
NEWSPAPER AD
$200
NGS
0.00
DOG FOOD
CAT FOOD
PET TREATS
PET SUPPLIES
$3,500
$2,100
$1,200
$2,750
RENT
$2,000
SALARIES
$2,000
UTILITIES
$1,000
PRODUCT STOCK $4,000
TOTAL
$9,550
TOTAL
$9,000
TOTAL
$200
ENTER MIA'S TOTAL PROFIT/LOSS FOR THE MONTH IN THE BOX BELOW, THEN CLICK SUBMIT.
$
Answer:350
Step-by-step explanation:
Just take away 9,550 - 9,200 = 350
Please help I'll love you forever pleasdeeee
Answer:
[tex]30[/tex]; Obtuse, isosceles triangle OR "[tex]B[/tex]"
Step-by-step explanation:
If you replace the [tex]z^o[/tex] variable with [tex]30^o[/tex] on both angles.
The angles will be:
[tex]30^o[/tex]
[tex]120^o[/tex] ([tex]4(30)=120^o[/tex])
[tex]30^o[/tex]
This angle is isosceles (two sides are equal). It is obtuse (there is one angle that is greater than [tex]90^o[/tex]).
Raul ordered 1 small photo enlargement and 4 medium photo enlargements for $29. Patricia ordered 5 small photo enlargements and 2 medium photo enlargments for $28
Answer:
m = $6.5
s = $3
Step-by-step explanation:
Raul ordered 1 small photo enlargement and 4 medium photo enlargements for $29. Patricia ordered 5 small photo enlargements and 2 medium photo enlargments for $28. determine the price of the small photo enlargements and medium photo enlargments
two equations can be derived from the question
s + 4m = 29 equation 1
5s + 2m = 28 equation 2
where
s = small photo enlargements
m = medium photo enlargements
multiply equation 1 by 5
5s + 20m = 145 equation 3
subtract equation 2 from 3
18m = 117
m = 6.5
substitute for m in equation 1
s = 29 - (4 x 6.5)
s = 3
En la feria una pera tiene un valor de b pesos y una manzana cuesta 7 pesos menos.la señora Rina compro 4 peras y una manzana. En términos de b, encuentra en total que la señora Rina pago.
Answer:
El total que la señora Rina pagó por sus frutas, en términos de b, es:
5b - 7Step-by-step explanation:
Para resolver este ejercicio, primero sacaremos las variable que nos brindan:
Costo de la pera = bCosto de la manzana = b - 7 (esto se debe a que la manzana cuesta 7 pesos menos que la pera, tal como dice el enunciado).Ahora, nos centraremos en la compra realizada por la señora Rina, donde se menciona que:
Compra de la señora Rina = 4 peras + 1 manzanaAhora, como si esto fuera una ecuación, vamos a reemplazar las manzanas y las peras por las variables que tenemos de su costo:
Compra de la señora Rina = 4b + b - 7Y procedemos a operar:
Compra de la señora Rina = 5b - 7 (sumando 4b + b)Por lo tanto, la compra de la señora Rina, en términos de b, le ha costado 5b - 7.
Find the properties of the Quadratic Function: -x^2-8x=15
Step-by-step explanation:
-x²-8x=15
=> -x²-8x-15= 0
<=> x2+8x+15=0
(x+5)(x+3)=0
x= -5 or x = -3
PLZ HELP ME!!!
Find the volume of the triangular pyramid to the nearest whole number. Find the volume of the triangular pyramid to the nearest whole number.
A)72 units³
B)96 units³
C)144 units³
D)288 units³
Answer:
B
Step-by-step explanation:
6×8 /2 = 24
24 ×12 /3 = 96 units³
A rolled up sleeping bag and shaped like a cylinder with a radius of 5" and a volume of 1727.9 cubic inches. What is the height of the road up sleeping bag?
Answer:
I think the height is 22.
Use scientific notation to express your answer. (5x10^8)(4x10^3)
Answer:
2e12
Step-by-step explanation:
Find the value of each variable in the figure on the right.
What is x and y?
A volleyball team scored 17 more points in its first game than in its third game. In the second game, the team scored 23 points. The total number of points scored was less than 60. What is the greatest number of points the team could have scored in its first game?
Answer:
27
Step-by-step explanation:
By rounding each number to 1 singnificant figure. estimate answers to:
a.) 8.2×6.7/0.46
b.) 23.4x13.9/0.18
(need answers for b.)
thank you!
Answer:
1000
Step-by-step explanation:
b.) 23.4x13.9/0.18= 1000
The population of Country A is about 1,047,000 and the population of Country B is about 1,080,000,000. Approximately how many times greater is the population of Country B than the population of the Country A?
1.)10
2.)100
3.)1000
4.)10,000
are the choices
Answer:
1000
Step-by-step explanation:
1,080,000,000/1,047,000
answer pls with a detailed explanation
Answer:
the surface area is 112 ft^2
Step-by-step explanation:
if you separate listen to two different rectangles you get what's a rectangle a being 3 + 10 + 3 equals 16 * 2 what gives you 32 okay and rectangle b being 3 + 2 + 3 what gives you 8 x 10 that gives you the area of 80 now you add the area both rectangles being 32 + 80 and to get a hundred and twelve feet squared
Choose the correct equation of the circle. Center: (13,13) Radius: 4
(don't judge me i was 2 lazy 2 type all the answer options until i discovered the answers where pics so i copied and pasted options here)
Answer:
It's the second one
Step-by-step explanation:
margo has 6 square tiles of equal size. each side of each tile is 0.8 inch long. if margi places all the tiles in a row with sides touching, how long is the row?
—————————————————
Margi has 6 square tiles of equal size. each side of each tile is 0.8 inch long. If Margi places all the tiles in a row with sides touching, how long is the row?
༆SOLUTION:—————————————————
[tex]\mathrm{N = 6×0.8 \: inch}[/tex]
[tex]{\boxed{\mathrm\green{N = 4.8 \: inch}}}[/tex]
༆ANSWER:—————————————————
[tex]\purple{\boxed{\boxed{\tt\pink{➢4.8 \: inch}}}}[/tex]
If Margi places all the tiles in a row with sides touching, the row will be 4.8 inch long!PLEASE HELP!!! find the value of x. if necessary, write your answer in simplest radical form
Answer:
[tex]\sqrt{80}[/tex]
Step-by-step explanation:
a^2+b^2=c^2
8^2+x^2=12^2
64+x^2=144
x^2=80
[tex]\sqrt{80}[/tex]
Step-by-step explanation:
using Pythagorean theorema²+b²=c²12 hypotenuse and let us say 8 is the 'a'
=> 8²+x²=12²=>64+x²=144
=>x²=144–64
=>√x²=√80
=>x=4√5
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Answer:
Not enough info
Step-by-step explanation:
Find the length from the school to the community center (this is the shortest route).
2^2+7^2 = c^2
c = sqrt(53)
The amount of time the trip takes depends on how long it takes Miguel to walk one city block.
sqrt(53)*lengthOfTimeForOneCityBlockInMinutes = the minimum time.
PLEASE HELP ASAP! I WILL AWARD BRAINLIEST PLZ HELP ASAP!!!!!!!!!
Answer:
Hello! answer: 27
Step-by-step explanation:
3 × 3 = 9
9 × 2 = 18
9 + 18 = 27 therefore the area is 27 hope that helps!
Solve 1/3(x-9)=2x+7
X=6
X=2
X=-6
X=-2
Answer:
x = -6
Step-by-step explanation:
1/3(x-9)=2x+7
1/3x - 3 = 2x + 7
-5/3x = 10
x = -6
A cone has a radius of 5 cm and a height of 12 cm. What is the volume of the cone rounded to the tenth? Use pi = 3.14
Answer:
942m^3
Step-by-step explanation:
Given data
Radius of cone= 5m
Height= 12 m
We know that volume of a cone is given as
V= πr^2h
V= 3.14*5^2*12
V= 3.14*25*12
V= 942 m^3
Hence the volume is 942m^3
i need help please hurry :)
Answer:
vertical, 47
Step-by-step explanation:
vertical, 47
Answer:
vertical; 47
Step-by-step explanation:
Vertical angles are opposites.